ZOOM LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM
    1.
    发明申请
    ZOOM LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM 审中-公开
    变焦镜头系统,可互换镜头设备和摄像机系统

    公开(公告)号:US20150350558A1

    公开(公告)日:2015-12-03

    申请号:US14823177

    申请日:2015-08-11

    Abstract: A zoom lens system comprising a positive first lens unit, a negative second lens unit, and subsequent lens units composed of three or more lens units and an aperture diaphragm, wherein intervals between adjacent lens units vary in zooming, the first lens unit is composed of two or less lens elements and moves along an optical axis in the zooming, three or more negative lens elements are located between the first lens unit and the aperture diaphragm, and the conditions: 0.30

    Abstract translation: 一种变焦透镜系统,包括正的第一透镜单元,负的第二透镜单元和由三个或更多个透镜单元和孔径光阑构成的后续透镜单元,其中相邻透镜单元之间的间隔在变焦中变化,第一透镜单元由 两个或更少的透镜元件并且在变焦中沿着光轴移动,三个或更多个负透镜元件位于第一透镜单元和孔径光阑之间,条件为:0.30 <| BFW / YW | <1.39和1.10

    LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS, AND CAMERA SYSTEM
    2.
    发明申请
    LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS, AND CAMERA SYSTEM 审中-公开
    镜头系统,可互换镜头设备和相机系统

    公开(公告)号:US20160178875A1

    公开(公告)日:2016-06-23

    申请号:US14972150

    申请日:2015-12-17

    CPC classification number: H04N5/2254 G02B13/18 G02B15/17

    Abstract: A lens system, an interchangeable lens apparatus, and a camera system each include a front group including a first focus lens group that moves with respect to an image surface in focusing from an infinity in-focus condition to a close-object in-focus condition; a rear group including a second focus lens group that moves with respect to the image surface in focusing, the front group and the rear group being located in order from an object side to an image side; a fixed lens group including at least one positive power lens element, the fixed lens group being located between the front group and the rear group and fixed with respect to the image surface in focusing; and an aperture diaphragm. The positive power lens in the fixed lens group satisfies dPgF>0.015 (dPgF is an anomalous dispersibility in a g-line and an F-line of the lens element).

    Abstract translation: 透镜系统,可互换透镜装置和照相机系统各自包括前组,其包括第一聚焦透镜组,所述第一聚焦透镜组相对于图像表面在从无限远对焦状态聚焦到相对对焦的对焦条件下移动 ; 包括在聚焦时相对于图像表面移动的第二聚焦透镜组的后组,所述前组和所述后组从物体侧到图像侧依次定位; 包括至少一个正功率透镜元件的固定透镜组,所述固定透镜组位于所述前组和所述后组之间,并且在聚焦时相对于所述图像表面固定; 和孔径光阑。 固定透镜组中的正功率透镜满足dPgF> 0.015(dPgF是透镜元件的g线和F线的异常分散性)。

    OBLIQUE VIEWING ENDOSCOPE AND IMAGING SYSTEM

    公开(公告)号:US20190086657A1

    公开(公告)日:2019-03-21

    申请号:US16134347

    申请日:2018-09-18

    Abstract: An oblique viewing endoscope has an aperture through which some rays out of rays reflected from an object in an oblique viewing direction pass, an imaging element that captures an image, based on image forming of the rays passing through the aperture, and a lens that is disposed between the aperture and the imaging element, and that has a lens surface on which the image is formed by causing some rays in at least a visual field center out of the rays passing through the aperture in the oblique viewing direction to be substantially vertically incident on a center of the imaging element.

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